Weight

Yes, the scale is measured to the 10th's so 5.04 would show 5.0 on a 10th's scale. A little risky if you ask me seeing as not all scales measure the same. Unless you're attending and can adjust.
 
I've seen some of my cars roll down the track at 140 grams, but hardly ever at the max. I'm with Kinser and JBD on this one, err on the side of caution.